2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub alkylation ntawm acetylide ions yog ib qho tseem ceeb hauv cov organic synthesis vim nws yog cov tshuaj tiv thaiv uas tsim cov carbon-carbon tshiab; yog li ntawd, nws tuaj yeem siv tau thaum tus kws tshuaj organic tab tom sim tsim cov molecule nyuaj los ntawm ntau cov khoom pib yooj yim.
Acetylide tsim yog dab tsi?
Ib acetylide anion yog ib qho anion tsim los ntawm kev tshem tawm cov proton los ntawm qhov kawg carbon ntawm lub davhlau ya nyob twg alkyne: Cov kua qaub yog cov npe ntawm cov khoom sib xyaw ua ke kom nce lossis txo acidity.
Acetylides siv rau dab tsi?
Acetylides ntawm hom RC2M tau dav siv hauv alkynylations hauv cov tshuaj lom neeg cov tshuaj lom neeg. Lawv yog nucleophiles uas ntxiv rau ntau yam ntawm electrophilic thiab unsaturated substrates. Daim ntawv thov classic yog Favorskii cov tshuaj tiv thaiv.
Anion acetylide tsim li cas?
Yog li ntawd, acetylide anions tuaj yeem tsim tau yooj yim by deprotonation siv lub hauv paus muaj zog txaus . Amide anion (NH2-), nyob rau hauv daim ntawv ntawm NaNH2 yog feem ntau siv rau kev tsim ntawm acetylide anions.
Puas yog acetylide zoo nucleophile?
Acetylide anions yog muaj zog hauv paus thiab muaj zog nucleophiles. Yog li ntawd, lawv muaj peev xwm tshem tawm halides thiab lwm pab pawg tawm hauv kev hloov pauv. Cov khoom yog hloov alkyne.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Rau cov neeg siv khoom siv dab tsi yog lub hauv paus ntawm kev ua yog?
Utilitarianism tuav tseg tias qhov kev ua yog yog nws nyiam txhawb kev zoo siab thiab tsis ncaj ncees yog tias nws nyiam ua rau muaj kev tu siab, lossis kev rov qab ntawm kev zoo siab-tsis yog kev zoo siab ntawm tus neeg ua yeeb yam tab sis ntawm txhua tus neeg cuam tshuam los ntawm nws.
Dab tsi yog kev xav ntawm autonomists dab tsi yog qhov kev xav ntawm kev zoo nkauj ntawm kev coj ncaj ncees?
Kev lig kev cai, muaj ob txoj haujlwm tawm tsam kev xav txog kev coj ua raws li kev cai lij choj ntawm kev ntsuas kev ncaj ncees ntawm kev kos duab: 'kev coj ncaj ncees kev ncaj ncees Ethics lossis kev coj ncaj ncees yog ib ceg ntawm kev xav uas "
Puas yog cov dab dab dab dab dab dab tau them?
OHL cov neeg ua si tsis tau nyiaj hli, vim lawv tsis raug lees paub tias yog cov neeg ua haujlwm raws li Txoj Cai Kev Ua Haujlwm. Txawm li cas los xij, lawv suav nrog cov txiaj ntsig xws li nyiaj rov qab txhua xyoo, tag nrho cov nqi kawm ntawv them, thiab daim pib pub dawb.
Dab tsi yog qhov kev tsim khoom tsim kho dua tshiab?
Ib qho kev tsim khoom tsim kho dua tshiab yog ib qho tsim los ntawm qhov pib rau kev hloov pauv sai hauv nws cov qauv, nrog rau nws cov khoom siv kho vajtse thiab software, txhawm rau kho sai sai nws cov peev txheej tsim khoom thiab kev ua haujlwm nyob rau hauv ib feem tsev neeg hauv kev teb rau kev lag luam tam sim ntawd.
